/*  Mytget - A download accelerator for GNU/Linux
 *  Homepage: https://github.com/lytsing/Mytget
 *  Copyright (C) 2005- xiaosuo
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */


#ifndef HEADER_H_
#define HEADER_H_

class HeadDataNode {
    public:
        HeadDataNode():attrName(NULL), attrValue(NULL), next(NULL) {}
        HeadDataNode(const HeadDataNode &that);
        ~HeadDataNode();
        HeadDataNode& operator = (const HeadDataNode &that);

        const char *attrName;
        const char *attrValue;
        HeadDataNode *next;
};

class HeadData {
    public:
        HeadData():head(NULL) {}
        HeadData(const HeadDataNode &that);
        ~HeadData();
        HeadData& operator = (const HeadData&that);

        // set a attrib property if not exist, add one
        int set_attr(const char *attrName, const char *attrValue);
        // get the attribValue identified by attrName;
        const char* get_attr(const char *attrName);
        // remote the attr identified by attrName;
        int remove_attr(const char *attrName);
        // traversal the data use trav_fun
        int traversal(int(*trav_fun)(HeadDataNode*));
        // remote all the atts
        void remove_all();

        HeadDataNode *head;
};

#endif  // HEADER_H_

